The mobile networks reach out to very remote places nowadays. SMS messaging is the cheapest and easiest way for people to community. Connect these questions coming in by SMS with crowdsourcing Services like Mechanical Turk to crowdsource the answer and push it back by SMS to the people who asked the question in de first place. In the near future Facebook will start with Facebbok for business. Facebook Messenger is used world wide by numereous people. Doctors could be part of a Facebook community to answer questions on the fly in their favorite app they use anyway.